01-14 GM 2500/3500HD 6.6L Duramax and 98-12 Dodge Ram 2500 / 3500 Cummins 5.9L/6.7L BD Flow-Max Add-On Pre Water Separator Kit

Fully modular design allows for the addition of water separator and/or high efficiency low-micron filters using non-proprietary cartridges that can be purchased at most auto parts retailers.